There is nothing quite like the smell of fresh-baked bread to make your mouth water! As any baker can tell you, you cannot bake bread without yeast. Yeast actually eat sugar so that they can reproduce and make more yeast, and make bread dough rise. But can they use sugar substitutes to do this? In this science project you will get to investigate how well yeast grow with sugar substitutes as a food source. Pass the butter, please!
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Have you ever bitten in to a cookie and thought, "this is the best cookie in the whole wide world!"? Was it one you made at home? In this science fair project, discover if you can perfect the taste of your favorite cookie right in your own kitchen!
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FoodSci_p014

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- Less Details

Time Required

Short (2-5 days)

Prerequisites

None

Material Availability

Readily available

Cost

Very Low (under $20)

Safety

Adult assistance is needed to make the cookie dough and bake the cookies.

Do you like playing with squishy play dough or modeling clay? Wouldn't it be cool if you could add lights, sound, or even motion to your play dough creations? In this science project, you will make play dough that conducts electricity, which will allow you to connect lights, motors, and buzzers!
This science project is the first in a three-part series on "squishy circuits," which can all be done with the same materials. We recommend doing the science projects in order.
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Elec_p073

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- Less Details

Time Required

Average (6-10 days)

Prerequisites

None

Material Availability

This science project requires a Squishy Circuits Kit and ingredients to make conductive and insulating play dough. See the Materials and Equipment list for details

Cost

Low ($20 - $50)

Safety

Ask for an adult's help when using the stove to make the conductive play dough. Never connect the battery pack's terminals directly to each other; this is called a short circuit and can make the batteries and wires get very hot. Do not connect the LEDs directly to the battery pack without using play dough; this will burn out the LEDs.

Maple syrup on pancakes, ripe bananas, and soft drinks are all foods that are tasty to us
because of the sugar in them. But did you know there are different kinds of
sugar? One food can have multiple kinds of sugar in it, and our bodies actually process
the different types of sugars differently. In this science project, you will measure the
concentration of two sugars, glucose and sucrose, in different foods and investigate how
sucrose is converted into glucose with the help of an…
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HumBio_p035

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- Less Details

Time Required

Average (6-10 days)

Prerequisites

None

Material Availability

The invertase for this science project needs to be specially ordered. See the Materials and Equipment section for more details.

While looking at a package of dry yeast it is hard to believe that the package has organisms in it that are alive. But add the right ingredients and presto, the mixture becomes a bubbly, oozing, mess of life! What are the right ingredients? What does that yeast need to become active? Do this science project and figure it out for yourself!
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Do you enjoy sculpting animals and other three-dimensional creations with play dough and modeling clay? Imagine adding lights to a house you've built, or glowing eyes on a dinosaur you've created. There are countless possibilities! In this science project, you will make play dough that conducts electricity so you can add lights to your three-dimensional creations.
This science project is the third in a three-part series on squishy circuits, which can all be done with the same materials. We…
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This science project requires a Squishy Circuits Kit and ingredients to make conductive and insulating play dough. See the Materials and Equipment list for details.

Cost

Low ($20 - $50)

Safety

Ask for an adult's help when using the stove to make the conductive play dough. Never connect the battery pack's terminals directly to each other; this is called a short circuit and can make the batteries and wires get very hot. Do not connect the LEDs directly to the battery pack without using play dough; this will burn out the LEDs.

Do you like making things with play dough or modeling clay? Wouldn't it be cool if you could add a bunch of lights to your creations? In this science project, you will make play dough that conducts electricity, and we will introduce you to some new types of circuits so you can add more lights to your artistic creations.
This science project is the second in a three-part series on "squishy circuits," which can all be done with the same materials. We recommend doing the science projects in order.
Read more

This science project requires a Squishy Circuits Kit and ingredients to make conductive and insulating play dough. See the Materials and Equipment list for details.

Cost

Low ($20 - $50)

Safety

Ask for an adult's help when using the stove to make the conductive play dough. Never connect the battery pack's terminals directly to each other; this is called a short circuit and can make the batteries and wires get very hot. Do not connect the LEDs directly to the battery pack without using play dough; this will burn out the LEDs.

Close your eyes for a moment and think about your favorite cake, pasta, and crusty bread. OK, you can open your eyes now, and please do not drool on your computer! What was the cake you pictured like? Was it light and fluffy? Did you imagine pasta with a silky, smooth texture? Was the bread you pictured wonderfully chewy? Did it give your jaws a workout? In this science fair project, you will explore an amazing substance in these foods, called gluten, and discover why these foods, all made from…
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FoodSci_p040

+ More Details

- Less Details

Time Required

Short (2-5 days)

Prerequisites

None

Material Availability

Readily available

Cost

Very Low (under $20)

Safety

If you have an allergy to wheat, you should not do this science fair project.

If you leave an ice cube out on the kitchen counter and come back to check on it in awhile, what do you find? A puddle! The same thing happens to ice in nature—if the temperature gets warm enough, it melts. In this ocean science project, you will find out what happens to sea levels if the ice at the North Pole melts, or if the ice at the South Pole melts. It is an important question for the millions of people who enjoy living along the coasts of the world.
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You can find this page online at: http://www.sciencebuddies.org/science-fair-projects/search.shtml?v=solt&pi=MicroBio_p008

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